In the figure, the potentiometer wire AB of length L and resistance 9r is joined to the cell D fo emf E and internal resistance r. The emf of the cell C is E/2 and its internal resistance is 2r. The galvanometer G will show no deflection when the length AJ is
A
`(4L)/(9)`
B
`(5L)/(9)`
C
`(7L)/(18)`
D
`(11L)/(18)`
Text Solution
Verified by Experts
The correct Answer is:
B
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